Q. 1.
(طحلب)

And طَحْلَبَتِ الأَرْضُ † The land became green with herbage:(Ḳ, TA:) or began to become so:(TA.)

verb form: Q1. ＝ (dissociation - B1)

طَحْلَبَ الإِبِلَHe sheared the camels.(Ḳ.)

verb form: Q1. ― (signification - B2)

And طَحْلَبَ فُلَانًاHe slew such a one.(Ḳ.)

طُحْلُبٌ

طُحْلُبٌ and طُحْلَبٌ(Ṣ, Mṣb, Ḳ) and طِحْلِبٌ(Lḥ, M, Ḳ)The green substance,(Ṣ, Ḳ,) or green slimy substance,(Mṣb,)that overspreads water(Ṣ, Mṣb, Ḳ)which has become stale:(Ḳ:) or what is upon water, resembling the web of the spider: n. un. with ة. (TA.)[See also عَرْمَضٌ.]

طِحْلِبَةٌ

مُطَحْلِبَةٌ

عَيْنٌ مُطَحْلِبَةٌ, (Ṣ,) and مَآءٌ مُطَحْلِبٌ(IAạr, Ḳ) and مُطَحْلَبٌ, (Ḳ,) this last anomalous, like مُسْهِبٌ, or originating from the supposition of the verb's being trans., (MF,)A source,(Ṣ,) and water,(Ḳ,)overspread withطُحْلُب, (Ṣ,) or having much thereof.(Ḳ.)